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Jerguson® Magnicator® Magnetic Level Indicator

The Magnicator Indicator is connected to a process vessel.  The chamber, or “column”, contains a sealed float with a permanent magnet assembly which rises and falls as the liquid level changes in the process vessel.  The permanent magnet assembly in the float is magnetically coupled to an indicator, which is mounted externally to the gage column but completely isolated from the process liquid.  Indicator flags are rotated by the float magnet assembly as it moves up and down in the chamber providing highly visible indication of where the level is inside of the vessel.


Magnetic Liquid Level Indicators are an attractive alternative to sight glasses for many applications. They provide improved visibility, reduced maintenance, and eliminate leak paths associated with sealing glass.  Reducing leak paths is critical amongst many users for flammable or toxic service.


Indicator Options

WF Series Wide Indicator

Jerguson® recommends flag indicators for virtually all applications, thus flags come as standard on Magnicator® products. However, there is nothing “standard” about their design and construction. They are the most reliable, shock resistant and longest lasting available. And now, they’re also the widest!

The NEW Jerguson® WF Series Wide Indicator

  • Industry best 1.5″ (38.10mm) width

  • IP68 Rated Hermetically Sealed construction available

  • Single stainless steel precision stamping

  • Permanent ceramic magnet in each flag

  • Dual rotation points

Learn more about the WF Series wide indicator by clicking here.

Jerguson® Magnicator® Magnetic Level Indicator with wide flag

Hermetically-Sealed Flag Indicator

The Jerguson Hermetically-Sealed Flag Indicator is purged with inert gas and permanently sealed for use in severe applications.  To achieve an IP-68 certification, this indicator utilizes a permanent epoxy end seal for outstanding long life dependability, unlike valved or silicon seals used by other manufacturers.  It also features a 316SS housing for excellent corrosion resistance.  By employing the dependable Jerguson flag design the hermetically sealed flag indicator offers outstanding visibility and the best reliability on the market.  For offshore, cryogenic, or caustic applications choose the Jerguson Hermetically-Sealed Flag Indicator for a lifetime of dependable level indication.

Learn more about the Hermetically-Sealed Flag Indicator by clicking here.

hermetically sealed magnetic level indicator

NightStar® LED Illuminators

NightStar Indicators for the Magnicator® make a level gage continuously visible…night or day with bright LED illumination. No more flashlight searches, no more spending more time than needed in process areas.

NightStar Illuminators provide an array of bright LEDs to shine on standard mechanical flags indicators.  No light or low-light, the operator can easily and reliably verify level.

  • High contrast indication

  • Not angle dependent – view can see clearly from many positions

  • Reduced operator exposure in process areas can increase safety

  • LEDs have a nominal life of 10 years

  • Approved for use in Class I, Division 1 classified locations

Learn more about NightStar® LED Illuminators by clicking here.

nightstar LED illuminators
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